Program-clock apparatus.



,F. F. LANDIS. PROG-RAM CLOCK APPARATUS. APPLIOATION FILED sEPT.12,19o6.

1,130,091, Patented Mar.2,1915.

3 SHEETS-SHEET 2.

YHE MORRIS PETERS Cov. F'HoToYL/Tno.. wAsHlNcroN n c,

Y 1*. P. LANDIS.. PROGRAM GLOGK APPARATUS. APPLICATION FILED SEPT.12,1906.

Patented Mar. 2, 1915.

3 SHEETS-SHEET 3.

atten/nut witwassen M, ffm! X2, Q4 1941,@

rHE MORRIS Palau/5 C., PHOTD-LITHO., WASHINGRJN. D

NTED STATES ATENT lllitllt.

FRANK F. LANBIS, OF WAYNESORQ, PENNSYLVANIA.

PRQG-RAIlLCLOCK APPRATUS.

Application filed September 12, i906.

To al /tfiom it' may] concern lrnovvn that l. FRANK F. Lannis, a of theUnited States residing at l oro, in the county oi' Franklin and State ofPennsylvania, have inventec` tain ner.' and useful improvements in ljrograin-Clock ipparatns, of whichV the tollowing is a specification.

My said invention consists in various improvements in the constructionand arrangement ot p: rts oil a program clock apparatus. whereby the aseolf springs, which have been ore a source ot trouble and disadin sachmechanism is entirely obviated and such an apparatus is provided olcomparatively few parts, simple l nd durable in its construction, andposi ive and re able in its operation under all condias will behereinafter more fully n and claimed.

to the accompanying drawings which ai made ay part hereof and on whichsimilar r terence ciaracters indicate similar parts, Figure l is a sideelevation or' a program clocl; apiiaratus embodying my said invention.Fig. top or plan View ot the saine, Fig. 3 a` horiaontal section lookingdownwardly from the dotted line 3 in if l, and Figs. ll, (i, 7, 8 and 9detail vie illustrating different parts of the apparatus on an enlargedscale7 as will be hereinafter more particularlyv pointed out.

ln sait drawings the portions marked AY represent the base andsupporting frame oit the apparatus, B the program cylinder, C thecylinder carrying the Contact arms. D an automatic program switch orcalendar cylinder, ll a. post forming part of the iframe and carryingthe terminals on one branch. or.' the electric circuit for operating thesignal system. through the program apparatus and G a dash-pot.

.lhe trame comprises the base A, which is a of suitable size havingsupports for the bearings for the various parts, as will be hereinafter'pointed out, and top casting A carrying the bearings for the apperendsol' the several journals, said top leing rigidly supported at a suitabledistance above said base by the posts A2 and E, each ot which is rigidlysecured to the base at the loiver end and to the top piece A at theupper end by having a screw-threadd part extending through perforationsin Patented Mar. 2, 1915.

serial No. esaaaz.

said top piece with nuts a2 and e, respectivelv, thereon.

The program cylinder B is preferably or brass. or other material forminga goed electrical conductor. and is provided with a central hollow aXisb by which it is journaled in bearings in the parts A El of the traine.The lorfer end of said axis is a solid ift and rests upon balls ainoanted in a socket in the top of a standard a formed in in ap"Lropriate position on the top ot base Al. lts upper end is provided witha solid end om formed with a socket into which a ball on the lovfer endof a. sliding pin al is ins rted- Said pin a4 is adjnstably secured in aperforation in the top part A of the frame and is adapted to be raisedand lovfered to vary the adjustment by means ot' a set-serev a5 as mostclearly illustrated in Fig. G. Said program cylinder maj,7 be formedWith as many program sections as desired. The one shoivn contains three.Each program consists of twelve circumlntial roivs of 'nity holes each,arranged in vertical rovvs a short distance apart and adapted to receivethe contact pins Each sectiony of said cylinder is thus adapted to havea separate program arranged thereon so that the apparatus 17Vill beadapted for sounding signals in tliderent places. or at ditierent timesaccording to dillierent programs. as will be hereinafter more fullydescribed. On the top ot' said program cvlinder is provided a dial plateB divided into sixtv parts by indicator points7 each point indicating a.minute and the entire dial one hour. the ten minutes divisions ot whichare indicated by the numerals l0, 20, SO, l0, 50 and 60. On its lowerend it is provided With a ratchet Wheel 'B2 containing cogs, each cogbeing arranged between the vertical rows el' holes in the programcylinder.

The contact cylinder C, as shown, is formed in three duplicate sections,or one for each program section of the cylinder B. Each section consistsof a brass cylinder mounted upon a central shaft C Which is journaled atits lower end in a socket in the top of a standard a on base A and atits top is connected with the top plate A of the frame in the sainemarmer as shown and described Yfor the bearings of program cylinder l)Each of said sections is insulated from the shaft and from the others byan insulating plate o,- as shown most clearly in F ig. 8. Each sectionis provided with metallic contact arms c secured thereto and Y extending,out therefrom a distance to enable them to contact with the contactpins g) on the program cylinder B when extending toward the aXis 'ofsaid cylinder. There are twelve of said arms arranged in a spiraldirection around each section and disposed vertically to correspond withthe vertical arrangement of the twelve circumferential rows of pin holesin the corresponding program section of cylinder B. ylhey are spaced,circumferentially to divide said cylinder into twelve equal spacesrepresenting twelve hours which are indicated by Aof said shaft whichclamps said plate against the top insulating ring o and secures theseveral parts of cylinder C together. A ratchet wheel C3 is mounted onthe lower end of the shaft C adjacent to the lower y end of the lowercylinder C provided with twelve teeth, each of which is arrangedimmediately beneath one of the contact arms c. Said ratchet wheel C3 isformed with a disk c3 on its lower edge having a single gear -tooth uponone side for a purpose to be presently described. Each section ofcylinder C is e formed with a circumferential groove gto receive one endof a spring contact arm 40.

'l` he automatic program switch or cali endar cylinder D is preferablyof wood or otheinon-conducting material journaled in the frame by meansof pivots inserted in its top and bottom, the top pivot ZS beingjournaled in the part A in a similar mang ner as the shaft of cylinder Bis journaled, or in any approved manner, and its lower end beingsupported upon a standard a7 on the base A. A short standard Z9Vprojects up from the top of standard al and has a pin d10 seteccentrically in its top. Said standard (Z9 may be rotated in its seatand held in adjusted-position by a set-screw (Zu. The top of pin r 10 isspherical in forni and rests in a socket in the lower end of cylinder D,or the hub of wheel D on its lower end, thus permitting said` wheel tobe adjusted in'relation to wheel 'C3 as may be necessary to secureperfect operation. Said cylinder D is provided at intervals withmetallic collars or rings Z corresponding with the number of programs tobe operated. Each collar is formed with fourteen equally spaced pinholes adapted to receive contact pins d. 0n itsV lower end it isprovided with'V adial plate D- containing fourteen notches representingthe seven days of the week and each day divided into two part-s oftwelve hours each, or night and day, the programs being ordinarilyarranged to continue from 6 in the morning until (l oclock at night andthen changed from 6 oclockat night until G olclock in the morning, orthe signals be suspended altogether between these hours.V Ilfhe pins dare adapted to contact with the outer end lof spring contact arms ellwhen extending in a direction at right angles therewith.

rlhe post E has a series of binding posts e hereon, to which one wire eof each elecsignal circuit is electrically connected, binding postsbeing insulated from post nl. Said binding posts are preferably arrangedin pairs and a metal plate e2 is attached to each pair and each platecarries one of the contact springs al, which projects across the side ofcylinder D alongside one of the collars Z thereon in position to contactwith one of the pins d in said collar when the parts are in correctrelative positions. 0n the face adjacent to cylinder ricV id l said postE has another series of binding posts et, also arranged in pairs (seeFig. 7) each of which screws iiitoa block of insulating material e5 bywhich it is insulated from said post. This arrangement is illustrated insection in F ig. 3, and the saine construction is used in mounting thebinding posts e. A metal plate e is also secured under each pair of saidbinding posts le* and carries one of the Contact springs 40, each ofwhich is in the forni of a i'iglit-angle, one arm resting in the grooveg in the top of the adjacent section of cylinder C and the other armresting in a similar groove g in the adjacent collar Z on cylinder D.The other wire rtf-0 of the signaling circuit is connected ldirectly tobase ri, which complet-es the cir` cuit through the signaling devicesand the program cylinder when one of its pins j) is in contact with oneofthe arms o', and one of the arms Lll is in contact with one ofthe pinsd. l

The magnets F are a pair of any suitable electro-magnets mounted onsuitable supports or posts a on the top of base A and connected by linefires w and fw with the circuit closer (not shown) operated by themaster clock (not shown).

rfhe operating mechanism will now be described. rl`he armature F ismounted upon an arm secured rigidly on a rock shaft which is journaledin suitable bearings in standards L10 and a on the base A. A lever 3 isrigidly mounted on said rock shaft 2 and is connected by a link il withthe lower end of a lever 5 rigidly secured` on a rock shaft 6. An arm 7is also rigidly secured on said rock shaft Gland has the outer end of al Ci meager a sliding pawl 8 connected therewith by a pivot 9; Theforward end 10 of said paul 8 is adapted to ride over the top side ofthe ratchet Wheel B2 and engage With the teeth thereof. Said paul 8 isprovided with an arin 11 rigidly secured to it and extending at rightangles therewith which has a tooth 12 forined on its outer end which isadapted to engage with ratchet Wheel B2 but against the opposed side ofa tooth that is about 90O from the tooth against which pawl 8 acts. Theend of arin 11 meeting the opposed side of a tooth from that which theend of paWl S is in contact when it stops insures the stopping of thewheel at exactly the saine position at which paWl S stops preventing allpossibility of the 'wheel racing ahead of the position Where the.inoveinent of paul 8 ends. Another arni T2 is rigidly secured to theopposite end of roch shaft 6 and is formed of goose-neel; shape, asshown in Fig. 5, and extends down through an opening' in the top of aninclosed dash-pot G, being connected by a link 18 with a sliding pistonG in said dash-pot. Said dash-pot consists of the outer casing G havinga top G2 inclosing the saine provided u'ith an opening gs through whichsaid arni T2 extends. in internal cylinder G3 is mounted Within saidcasing G upon bottoni gg which is supported upon the bottoin of thecasing G by a circumferential flange provided with a series of openingsg2. Said bottoni g is provided 'with a central opening in which ismounted a valve held centered by guides y upon the bottoni side of thevalve the guides of which extend down through said opening. cross bar gextends between' the louer ends of two of said guides, said barextending to beyond the face of said guide to limit the lift of saidAvalve and an arni extends across beneath said cross bar, one end ofwhich is provided With a screw-threaded perforation which engages thelower end of a screw-threaded rod G which extends upwardly through anopening in one side of the top G2 and is provided with a hand Wheel bywhich it may be turned. Thus, by turning said hand Wheel the end of thearni G5 inay be raised or lowered to strike bar g4 and the drop of valveG'1 thus .varied to provide a great-er or less opening through thebottoni of the cylinder when the piston G is falling. The casing G isfilled with a iiuid of a character least affected by change oftemperature, such as glycerin, and, in operation, after the piston G hasbeen raised, the time of its descent inay be Varied as desired byadjusting the arin G5, which varies the opening left unt said valveafter g* strikes arm G5, as will be readily understood. The inner end ofpaul 8 rests between upright fingers a on a bracket supported on the topa standard om. A. paWl 1st. is pivoted between said lingers beneath saidpawl 8, its forward end being adapted to engage the underside of theratchet wheel 2 and behind the teeth thereof with the top side of whichthe end 10 of said pau/l S engages. The rear end 15 of said lever isweighted to keep said paul normally in engagement with the teeth on saidratchet wheel.

The shaft C" carrying the cylinder C is normally locked in a lixedposition by a paul 1G containing a tooth 17 in position to engage thenotches of the ratchet uli-cel C3. Said paWl' is connected by link 18with a weighted lever 19 piroted in a. bracket on the top of a standardall", which thus adapted to normally hold said paul the face of saidratchet Wheel to secure its engagement. in arin 9.0 arined `vwith pawls21, and mounted by ineans of a balland-socliet Vconnection on the top ofa standard which is connected with a right angle casting 2% supported bya ball-and-soclot connection on the top of a standard on the base A.From the other angle of part 2d exten s. an arin 26, on the outer end ofwhich is mounted a heavy Weight 27 which is connected loosely by a linlf28 to a standard 29 on the ba se fr, said li Q8 being of a length tohold said Weight toward the side of the cylinder in the direction of theope ation of the pauls. n arni SO secured to the side f the post Aprevents undue upward inovement of said arin 20 and pin El extending upfroni the base l prevents undue hachward rnoyeinent thereof. arin 2O ispivoted to an arin 50 by a pivot 51 and said arin is in turn piyoted onthe top of a standard on a stand extending` up from base A. lt- Willthus be seen that the increment of said arin 2O is permitted to be veryloose, without any binding action, but at the saine tiine it held at alltinies toward the ratche\J Wheel C* and its inner end is held at alltimes to rest against the edge of a cani 32 mounted upon the shaft ofthe cylinder l, beneath said cylinder. lu the position shown in Fig. 3the parts are in engaged position but as said cylinder B revolves saidcani 32 operates to gradually force said arin QC' outward, disengagingthe pawls 21 and 33 frein the ratchet wheel C3, which, during` thisincrement, is held locked by the pau'l 16 and the tooth 1T thereofengaging with the opposite side of said ratchet Wheel When said cylinderB rotates until the point B-t of The inner eno of lltl to throw said arm20 forward and toward the cylinder C, the pawl 22 striking the forwardend of lever 16 releasing the tooth 17 from engagement with the ratchetwheel C3, but at the same time engaging pawl 33 with therrear side ofthe tooth on the opposite side of said ratchet wheel, and, through saidpawl, forcing said ratchetwheel and the cylinder C around one notch, thepawl 21 falling into the next notchin said ratchet wheel, to arrest themovement, and the tooth 17 into a notch on the opposite side to locksaid ratchet wheel during the next operation.

The master clock being arranged to close the circuit through wires w andw', in the usual or any approved manner at each minute period, magnet Fwill be energized each minute, the armature F attractedto the poles ofsaid magnets, which will operate to rock the shaft 2, and, lthrough thelink 4l, draw the lower end of the arm 5 inward rocking the shaft 6 andthrowing the upper end of the arm 7 outward, which will pull the'pawl 8to drag its point 10 over the top of the tooth on the ratchet wheel B2next behind the one with which its forward end has just been engaged, sothat said point 10 will drop behind said next tooth. The cylinder B isheld from being moved backwardly during this'V operation by means of thepawl 14: which is held into engagement with said ratchet wheel by itsweighted end 15. The arm 11 with the pawl 12 on its outer end is alsowithdrawn by this motion of pawl 8 from engagement with the edge of theratchet wheel and said wheel and cylinder B thus left free to rotate ina forward direction. During this operation the arm 72 has been drawnupwardly by the movement of shaft 6 which through the link 13 lifts thepiston G', the fluid in the surrounding casing passing through the valveopening undervalve G4 freely into Vthe cylinder G3 beneath said pistonduring this operation. The electric circuit then being broken and themagnets de'e'nergized, the weight of said piston G operates to cause thesame to fall, forcing the fluid beneath it in cylinder` G3 outthroughthe space between said piston and cylinder and through the opening undervalve G4, said opening bein@ adjusted by the screw rod G15 to time thedescent of said piston as desired. As said piston descends it rocks theshaft 6 forward, carrying with it the arm 7 andrpawl 8, the forward endof which is engaged with the rear side ofV one ofthe teeth of ratchetwheel B2 and operates to push cylinder B forward.V As said pawl 8advances the arm 1l advances therewith, carrying the pawl 12 on itsouter end into the space between the next two teeth of the ratchet wheelB2 and stops the forward movement of said cylinder when it has advancedexactly the space of one tooth. The pawl 14 is, at the same time,passing under the tooth which was Y back of it and will fall behindsaidtooth by reason of the weighted end 15 .asf soon as said cylinder isadvanced one space, thus preventing any backward movement of saidcylinder. Any racing or back-lash7 of the cylinder is thus effectuallyprevented. The cylinder is thus locked in both directions until themagnets F are again energized at the completion of the next minute oftime and the operation repeated. By adjusting the valve G4 it will beseen that the time required for advancing cylinder B one space will beregulated to cover as many seconds of the minute as desired. Thus-theforward movement can be continued over a space of iifty seconds or evenfty-five seconds without interfering with or endangering the results ofthe operation of the program apparatus. The movement being thus madegradual and steady, the strain and wear upon the parts is reduced to aminimum. At each minute movement of the cylinder B the cam 32 on thelower end of its shaft operates to push the arm Q0 outward until saidcylinder has completed a revolution covering the space of one hour,atrwhich time the weight 27 operates as before described to advancecylinder C one space, which, as shown in Fig. 2, would bring 9 on thedial C2 to the position shown ror 8 and would indicate nine oclock. Thearm 0 just in use would also be thrown out of contact position and thenext arm be brought into contact position, which arm would be oppositethe next lower circumferential row of holes in the program cylinder andthis row would have pins arranged at the periods of time during the hourbetween 9 and 10 oclockwlien it is desired to have signals sounded. Theoperation thus continues throughout the period of twelve hours. At thecompletion of each twelve hour periods, or at six oclock in the eveningand again at six oclock in the morning, the tooth on the wheel C3 isbrought to the position shown in Fig. 3 in engagement with one of thenotches in the disk D of the bottom of switch or calendar cylinder D andas said cylinder C makes the next movement of one 'notch said disk D andcylinder D is also moved a period of one notch, which will serve tochange the circuit through the signal apparatus from one program toanother, according as the pins CZare arranged in the collars (l toconnect one or the other of said programs with the signaling system.

The operation of my said invention may v be further recapitulated asfollows The contact pins 29 being arranged in the different programsections of the cylinder B so as to contact with the contact arms c onthe cylinder C at the times desired for sounding the signals, and eachofthe sections C being electrically connected in the circuit of thesignaling device to be operated by the program, said signals will besounded as the program cylinder B revolyes to bring the contact pins 7?into contact with the contact arms c", as will be readily understood. lnto arrange the contact pins p in the respective program sections asdesired, the dials B and C2 are to be consulted. By referring to Fig. 2,it

will be seen that when cylinders and C are in the relative positionshown it is S :30 ocloclr, either at day or night. rEhe hour beingindicated by the dia- C2 and the minutes by the dial B. The pointer A5supported on the top A ot the frame with an arm extending across thespace between the edges ot said dials will marl: the relatiye positions.It it is desired to sound a signal at S olcloclt and fty minutes acontactpin g? is placed in the same circumterenti al row ot holes in theprogram cylinder immediately beneath the indicator point 50 on the dialB and when said cylinder B is rotated to bring this point in the samerelation to cylinder C as shown in Fig. 2 :tor the point 30, said pointwill contact with the arm of said cylinder C and close the circuit whichwill sound the alarm. An alarm may thus be sounded at an)T minutebetween 8 and 9 oclock, or any other hour, by placing a contact pin p inthe proper hole of the circumferential row opposite the contact arm cwhich registers in vertical position with said row and under the hourindicated by the dial. As each of the sections is electrically connectedby the contact spring Ul() with one of the metal collars d on thecylinder D and each ot said collars (Z is electrically connectec` withthe signals which it is desired shall be operated at any period of time,it will be understood that the program can be adjusted to operate asmany different programs or signals as there are program sections on thecylinders B and C or the programs can be arranged so that they will beoperated one, two, or more at the same time. Thus a program for the dayfor live working days of the week, run from siX in the morning until sixocloclt at night, can be arranged on the lower ection ot cylinder B,another program for Saturday to run from six oclock in the morning untiltwelve ocloclr noon can be arranged on the middle section, and anotherprogram for Sunday to sound only a. tew signals, or none whatever, canbe arranged on the upper section of said cylinder l?. Or each sectionmay talre care of a separate signaling circuit and as many programs asdesired be operated simultaneously, the number of sections beingmultiplied or diminished to suit the work 'for which each apparatus isespecially designed. The pins CZ or the cylinder D can be arranged inthe perforations in the collars (Z to contact with the contact springssl leading to the binding posts e on the post and connecting with onewire ot the circuit operaL4 said signals so that any one et the programscan be thrown into the circuit any time, either night or day, oi any dayof the week. rhus the adjustment of the pins jp in cylinder and the pinsd oi"- switch cylinder l) may bring about any arrangement or program otls desired.

By `eterring toy l it will be seen that in their normal positions thepivots connecting linlz el: with the lever 3 and arm 5 are in line withthe axis of the armature shaft i2, the link il being directly in linewith lever Si toggle connection is thus :formed between lever 3 and arm5 which enables said arm to be started on its morement to the positionsho-wn by dotted lines with the least eX- penditure et' power, or, whenthe field betw en magnet and armature is widest and the current must bemost heavily taxed to start the load, the leverage between lever 3 andarm isfireatest, and as the leverage decreases by the shortening or" theangle ot the toggle the iield narrows and t e power becomes stronger totake care of the increased load. Great economy in the power required tooperate the apparatus is thus secured. Y

rthe use ot springs, which vary in tension with variations intemperature and reduire much care and attention, is thus entirelyobyiated in such an apparatus and constant and positively operatingpower through the medium weights employed.

Haring thus 'fully described my said invention, what claim new anddesire to secure by Letters Patent, is :w

l. ln an elect ic program apparatus, the combination, of a trame, aprogram cylinder, adjustable contact pins therein, a contact cylinder,contact arms thereon extending into the path ot said contact pins, aprogram switch cylinder, said several cylinders being mounted to rotate,electric contact devices for connecting said contact and switchcylinders, means for automatically making and breaking said elect-ricconnections and operating the switch cylinder by the moyement of .saidprogram cylinder, and means for operating said program cylinder,substantially as set forth.

2. In an electric program apparatus, the combination, of a frame, aprogram cylinder, means tor operating said program cylinder comprising aweight for 'forcing it forward and electro-magnets 'for reverselyoperating said weight, a Contact cylinder, an automatic switch cylinder,signaling circuit terminals adjacent to said switch cylinder, adjustableContact pins in said switch cylinder for closing the circuit whendesired, and gearing connecting the program cylinder with said othercylinders for operating them, substantially as set forth.

3. In an electric program apparatus, the combination, of a frame, aprogram cylinder carrying Contact pins, a contact cylinder havingcontact arms, a switch cylinder, an electricl connection betweensaidcontact cylinder and said switch cylinder, a post adjacent to saidcylinders, terminals of one side of a signaling circuit on said post,Ycontact arms projecting from said terminals adjacent to saidswitchcylinder, adjustable pins in collars on said switchl cylinder arrangedto be adapted to contact with said contact arms, said collarselectrically connected to 'the contact cylinder, means for operatingsaid program cylinder, and gearing connecting said program cylinder tooperate the contact cylinder one notch at each revolution of the programcylinder and the switch cylinder one notch at each revolution of theContact cylinder, substantially as set forth.

4r. In an electric apparatus, the combination, of a frame, a programcylinder, a contact cylinder and a switch cylinder electricallyconnected by adjustable contact arms and pins arranged to contact witheach other to malre and brealr said connection as desired by theoperation of said program cylinder,

' means for forcing said program cylinder forward on its axis step bystep comprising a weight, and electro-magnets for reversely operatingsaid weight, substantially as set forth.

5. An electric program apparatus comprising a program cylinder formedwith a series of rows of holes in its periphery equal to the number ofhours to be covered by the program and each row comprising a number ofholes equal to the sub-divisions of the hour desired to be denoted bysaid program, contact pins formed to be inserted in said holes in suchrelative arrangement as may be desired, a contact cylindermounted'parallel with and adjacent to said `program cylinder, andcontact arms arranged in a spiral direction around said contact cylinderopposite the rows of holes in the program cylinder', and extending intothe path of said contact pins, substantially as set forth.

6. In an electric program apparatus, the combination, of a frame, aprogram cylinder, means for operating said cylinder comprising a ratchetwheel, a sliding pawl engaging with said ratchet wheel and pivoted to anarm on a rock-shaft, said rock-shaft jour- Vnaled on said frame, anarmature shaft, an armature operated lever thereon, said armature, and amagnet adjacent to said armature, the connection between said armaturelever and said rock-shaft embodying a toggle arranged with its pivotsnormally in line with the axis of the armature shaft, substantially asset forth.

7. In an electric program apparatus, the combination, of a frame, aprogram cylinder, means for operating the same compriscylinder, theconnection between said lever and saidVroclr-shaft comprising a togglethe magnet for operating said armature, substantially as set fort f 8.In an electric program apparatus, the combination, of a frame, a programcylinder, means for operating it, a. cam carried by the shaft thereof, acontact cylinder, a ratchet wheel on the lower endthereof, Va lockingpawl engaging with one side of said ratchet wheel, an arm mounted on awahbling support and carrying fingers or pawls engaging with saidratchet wheel, said wabbling support, a weighted arm on one side of saidsupport normally holding said pawls toward said ratchet wheel and theinner end of said arm against the edge of said cam, said parts beingarranged so that after said cam turns with the cylinder to the shouldertherein the end of the arm will fall off said shoulder and the pawlswill engage one behind the point of the holding pawl, one behind a toothon the ratchet wheel and operate to throw out said holding pawl and turnthe cylinder one notch, when the other pawl will engage the ratchetwheel and arrest the movement, substantially as set forth.

9. In an electric program apparatus, the combination, of a frame, aVprogram cylinder, means for operating it, a contact cylinder, weightedpawls and arms for operating it from said program cylinder, a switchcylinder, and a gear connecting said vswitch cylinder with said contactcylinder, substantially as set forth.

10. In an electric program apparatus, the combination, of the frame, aprogram cyl- Vinder, the operating mechanism therefor comp 1ising aweight for forcing it forward, a contact cylinder, means connected withthe program cylinder for operating said Contact cylinder comprising aweight for forcing it forward, and a switch cylinder geared to beoperated from said contact cylinder, substantially as set forth.

l1. An electric program apparatus comprising a program cylinder, weightoperated mechanism for rotating said Vcylinder forward, electricallyoperated means for reversely operating said mechanism, a contactcylinder adjacent to said program cylinder, Contact arms and pinscarried by said program and contact cylinders respectively arranged tocontact with each other, and a switch cylinder geared to said contactcylinder and also electrically connected therewith, substantially as setforth.

12. In a program apparatus the combination ofthe program cylinder andmeans parts of which are normally in line, and the for operating saidprogram cylinder step by step in a forward direction comprising aratchet wheel on said cylinder, a bar mounted to reciprocatehorizontally between guides and formed with arms ext-ending at rightangles to each other with a pawl on the outer end of each arm, one ofsaid pawls being arranged to ride over the top face of said ratchetwheel on one side of said cylinder and engage behind the teeth of saidratchet wheel from the top to push said cylinder forward, and the otherbeing arranged to engage with the peripheral face of said ratchet wheeland in front of the teeth to arrest the forward motion of the cylinderas said bar completes its forward movements, a rock-shaft having an armfixed thereon and projecting each way therefrom, one end of which ispivoted to said sliding bar and the other end of which is pivoted tomeans for operating said rochshaft in one direction, and means foroperating said rock-shaft in the reverse direction, substantially as setforth.

13. ln a program apparatus the combination of the program cylint er andmechanism for operating said program cylinder step by step comprising adash-pot having a piston connected with the mechanism and adapted tooperate said mechanism in one direction by gravity, electro-magnets, anda. roch-shaft in a plane below the top of said dash-pot adapted to beoperated by said electro-magnets to lift said piston, the connect-ionbetween said piston and said rockshaft including a goose-neck armextending through the top of said dash-pot, substantially as set forth.

14C. ln a program apparatus the combination of the program cylinder andmechanism for operating the same step by step comprising a rock-shaft,an operative connection between said roch-shaft and said programcylinder, electro-magnets, a connection between said electro-magnets andsaid roch-shaft for operating it in one direction, a dash-pot, aweighted piston in said dash-pot, and a connection between said pistonand said roch-shaft whereby the weight of said piston operates saidroch-shaft reversely to said magnets, substantially as set forth.

l5. ln a program clock apparatus, the combination, of the severalcylinders, mechanism for rotating the same comprising weights forimparting the forward driving` power, electromagnets for lifting saidweghts into a driving position, one of said cylinders being connectedthrough a loosely mounted arm with pawls to a weight hung to hold saidpawls into engagement with the ratchet wheel and at the same time forcesaid ratchet wheel forward, said arm, and said weight, substantially asset forth.

16. A program cloclr apparatus comprising a switch or calendar cylindercomposed of non-Conducting material having a metal ring thereon for eachprogram electrically connected with the switch-cylinder and providedwith adjustable contact points adapted to be placed in position tocontact with one side of a signaling circuit to close the same,substantially as set forth.

l?. ln a program apparatus, the combination of a wabbling arm mounted ona tilting support and carrying driving and stop pawls for moving andstopping a ratchet wheel, said ratchet wheel, said tilting support, aweight for controlling and moving `iid arm in a direction so that saidweight acts to turn said ratchet wheel and lteep said pawls inengagement therewith to effect the movement, substantially as set forth.

i8. A program apparatus comprising a driving ratchet Wheel, a lockingpawl for holding said ratchet wheel, an operating pawl having threecontacts, one contact for driving said ratchet wheel, one to stop saidratchet wheel, and one for disengaging a locking pawl holding saidratchet wheel from turning in either direction during all of the timethe driving pawl does not act to move said ratchet wheel, and means foroperating said pawl, substantially as set forth.

19. fr program apparatus comprising a program cylinder, a circular rackon said cylinder, a r-:eight operated pawl engaging with said racli foroperatinO` said cylinder in a forward direction, electrically operateddevices for returning said weight operated pawls to operative position,a contact cylinder adjacent to said program cylinder provided with acircular rack, a paivl for engagement with said raclr to normally holdsaid contact cylinder in fixed position, a weight operated pa-wl forengaging with said circular raclr on tne contact cylinder fordisengaging the locking pawl and oirierating said contact cylinder in aforward direction, said locking pawl, a connection between said pawl andthe program cylinder for timing its operation, program switch cylinderconnected to be operated at stated intervals by said contact cylinder,anl electrical contacts adapted to connect with several cylinders,substantially as set forth.

A program apparatus comprising a. program cylinder, a contact cylinder,and a switch cylinder, means for establishing electric contacts betweensaid cylinders, weight operated mechanism for forcing said severalcylinders forward, and electrically operated melianism for returningsaid weight operated mechanism to operative position,

ubstantially as set forth.

il. A program apparatus comprising a program cylinder, a. weight mountedin a dash-pot for operating said cylinder in a forward direction, meansfor regulating the time of the fall of said weight, electric meohanismorreturning said Weight to op- In witness whereof, I, have hereunto seterative position, a Contact cylinder and a, my hand and seal atVashington D. C.. this 10 program switch cylinder, Weight operated 28thday of August, A. D. nineteen hundred devices for forcing said cylindersforward, and six.

and a connection between said .Weight oper- FRANK F. LANDIS. [L s] ateddevices and the program cylinder for itnesses: timing their operation,substantially as set E. W. BRADFORD, forth. H. PARKINS.

Copies of this patent may be obtained for five cents each, by addressingthe Gommissioner of Patents,

v Washington, D. C. Y

